Car-axle box



(No Model.) 7 2 Sheets-Sheet 1;

a D. STIMSON.

GAR AXLE BOX.

No. 298,253. Patented May 6'. 1884.

1| VE/VTOR' WITNESSES I v w l i. I (Z,

- Attorney (No Model.)

D. S STIMSON.

OAR AXLE BOX.

2 Sh etsS heet 2.

Patented May- 6, 1884.

N. PEYEHS. Flmlu-Lilhagnphar. wahlngmm n,c.

PATENT firmer).

DAVID S. STIMSON, OF CONCORD, NEW HAMPSHIRE.

CAR-AXLE BOX.

SPECIFICATIONforming part of Letters Patent No. 298,253, dated May 6,1884;

Application filed October 13, I883. (No model.)

To all whom it may concern Be it known that-I, DAVID S. STIMsoN, acitizen of the United States, residing at Goncord, in the county ofMerrimac and State of New Hampshire, have invented certain new anduseful Improvementsin Gar-Axle Boxes, of which the following is aspecification, reference being had therein to the accompanying drawings.

The object of my invention is not only to render the master car buildersstandard axle-box entirely dust and oil proof by preventing the entranceof dust and the escape of oil around the axle, but also to furnish adustguard that can be applied and removed with facility.

Figure-1 of the accompanying drawings is a perspective view of anaxle-box provided with this improvement. Fig. 2is a top view thereof,partly in horizontal section, showing the dust-guard in position. Fig.3is a back view, partly in elevation and partly in transverse section, aportion of the back plate being broken away. Fig. 4is a perspective viewof one section of this'separable dust-guard, provided with agroove forpacking. Fig. 5 is a back view of the dust-guard removed from theaxle-box, showing the two sections joined together by atongue-and-groove joint. Fig. 6 represents various forms of the jointwhich maybe used in place of the tongue-and-groove joint shown in Fig.5. Fig. 7 is a side elevation of one corner of the car-axle box, thehorizontal dotted lines being designed to represent the extreme upper,extreme lower, and intermediate positions of the upper edge of theflange of one section of the dust-guard, the distance between the upperand lower lines in dicating the depth of vertical play which thedust-guard has when within the dustguard chamber. Fig. 8 is a top viewof an axle-box now in ordinary use, having an opening in its top platefor the insertion of the dust-guard.

The axle-box A is of any ordinary or suitable construction, preferablyof the kind known as the master car-builders standard axle-box. Theinner end of this box is provided with a chamber, B, known as thedustguard chamber, and when constructed in accordance with myimprovement the box is provided with slots cone on each side-openinginto said chamber, through which slots the guard chamber.

- attached thereto.

sections of the dust-guard are inserted and removed. The top plate ofthe axle-box is made without an opening into the dust-guard chamber.

any suitable material, is composed of sections, which, when thedust-guard is in its normal position, are separable or adapted to moveapart in a horizontal direction, the dust-guard being divided from itsupper to its lower edge, preferably in a vertical line. Each section isprovided at its inner end with a semicircular recess, 12, and on itsouter end with a flange, D. The dust guard is somewhat narrower from itsupper to its lower edge than the vertical depth of the dust-guardchamber, so that it has a slight vertical play within said chamher. Whenthe two sections of the dust-guard are inserted in the dust-guardchamber through the side openings in the axle-box,the recessed ends ofthe sections close around the dust guard bearing, and the flanges D atthe outer ends of said sections rest against the sides of The dust-guardC, constructed of wood or the axle-box and close the openings therein, 1

preventing the admission of dust to the dust- These flanges extend aboveand belowthe upper and lower edges of the dust-guard, so as to keep theslots covered their entire length, notwithstanding the vertical play ofthe dust-guard. The flanges D are preferably provided with suitablepacking, D, composed of rubber, leather, or some elastic or flexiblematerial, inserted in grooves c on the inner faces of said flanges, orotherwise This packing serves to further prevent the entrance of dustinto the dustguard chamber by keeping a tight joint be-' tween theflanges and the sides of the axle box, even though the dust-guard beallowed lateral play.

The top plate of the axle-box, directly above the slots in which theparts of the dust-guard slide, is provided with projecting lips d, whichcover the tops of the flanges on said dustguard when the latter is inplace in the box. These lips may be recessed, as shown at h, or providedwith slight downward projections over the outer face of the dust-guard,sufficient room being left for lateral and vertical play.

The meeting ends of the two sections of the dust-guard may beconstructedwith any suitable joint, as square, beveled, rabbet,tongueand-grooved, semicircular, V-shaped, or oth- I chamber, adustguard composed of sections erwisc. The concave edges of thedustguard sections are preferably provided with a groove, f, for theinsertion of a packing, r ol'elastie or flexible material, such asindia-rubber or leather.

The axle-box is provided the sides with devices for holdingtheseetionsin place, those shown being steel springs E, the inner endsof which rest against the outer ends or flange ot' the dust-guardsections and press the latter closely around the axle. These springs maybe made to turn 011 pivots, so that they may be swung off from contactwith the dust-guard to enable the two sections of the latter to bereadily removed from the box. These springs permit a lateral play of thedust-guard in its chamber.

To remove the dustguard from the axle-box, it is only necessary to swingoff or disengage the holding devices, and then draw out the sectionslaterally through the slots in the sides of the box; and to apply thedust-guard the two sections are inserted through the vertical slots fromopposite sides of the axle-box, and the holding devices swung intocontact with the outer ends of said sections.

\Vhat is claimed as the invention is- 1. A dust-guard lor axle-boxes,composed of sections separable in a horizontal direction, the inner endsof which are provided with semicircular or concave recesses adapted toiit around the axle, and the vertical outerends with flanges adapted toshut over slots in the sides of the axle-box when the dust-guard is inposition, substantially as set forth.

2. A dust-guard for axle-boxes, composed of sections separable in ahorizontal direction, the inner ends of which are provided withsemicircular or concave recesses adapted to flt around theaxle, and thevertical outer ends with flanges adapted to shut over slots in the sidesof the axle-box, said flanges having suitable packing, substantially asset forth.

3. The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into the dust-guard chamber, adust-guard composed of sections separable in a horizontal direction andadapted for insertion and removal through saidside slots, said sectionsbeing provided with flanges at their outer ends, adapted to shut oversaid side slots, and means for retaining said dustguard in position inthe axlebox.

4. The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into the dust-guard separablein a horizontal direction and adapted for insertion and removal throughsaid side slots, said sections being provided with packed flanges attheir outer ends, adapted to shut over said side slots, and means forretaining said dust-guard in position in the axle-box.

5. The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into the dust'guard chamber, adust-guard composed of sections separable in a horizontal direction, andprovided with flanges at their outer ends,adapted to shut over said sideslots, and spring fastening devices at the sides of said axle-box forholding said dust-guard in place.

(5. The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into thedust-guard chamber, adust-guard composed of sections separable in a horizontal direction andadapt ed for insertion and removal through said side slots, saidsections being provided with packed flanges at their outer ends, adaptedto shut over said side slots, and spring l'astening devices at the sidesof said axle-box for holding said dust-guard in position.

7. The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into the dust guard chamber,and with laterally-projecting lips above said slots, and a sectionaldust-guard having flanges adapted to shut over said slots and under saidlips.

S. The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into the dust-guard chamber.and with latcrally-projccting lips above said slots, and a sectionaldustkguard having flanges adapted to shut over said slots and under saidlips, said lips being recessed to receive the upper ends of saidflanges.

f). The combination, substantially as set forth, of an axle-box providedwith slots in its vertical sides opening into the dustguard chamber, andwith laterally-projecting lips above said slots, a sectional dust-guardhaving flanges adapted to shut over said slots and under said lips, andfastening devices at the sides of the box for holding said dust-guard inplace.

In testimony whcreofI aflix my signature in presence 01' two witnesses.

DAVID S. S'IIMSON. \Vitnesses:

NATHL. E. l\L\R'lIN, Finn) H. Gotnm.

